//
//  WBVisitorView.swift
//  Weibo
//
//  Created by apple on 2016/12/3.
//  Copyright © 2016年 yanjun. All rights reserved.
//

import UIKit

// 访客视图
class WBVisitorView: UIView {
    
    // 注册按钮
    lazy var registerButton: UIButton = UIButton.cz_textButton("注册", fontSize: 16, normalColor: UIColor.orange, highlightedColor: UIColor.black, backgroundImageName: "common_button_white_disable")
    
    // 登录按钮
    lazy var loginButton: UIButton = UIButton.cz_textButton("注册", fontSize: 16, normalColor: UIColor.darkGray, highlightedColor: UIColor.black, backgroundImageName: "common_button_white_disable")


    // 访客视图信息字典
    var visitorInfo: [String: String]? {
        
        didSet {
            
            guard let imageName = visitorInfo?["imageName"],
                let message = visitorInfo?["message"] else {
                    return
            }
            
            tipLabel.text = message
            
            if imageName == "" {
                startAnimation()
                return
            }
            
            iconView.image = UIImage(named: imageName)
            
            // 其他控制器的访客视图不需要显示小房子/遮罩视图
            houseIconView.isHidden = true
            maskIconView.isHidden = true
        }
        
    }
    
    // MARK: - 构造函数
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }


    private func startAnimation() {
        
        let anim = CABasicAnimation.init(keyPath: "transform.rotation")
        
        anim.toValue = 2 * M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 15
        // 动画完成不删除，如果 iconView 被释放，动画会一起销毁
        anim.isRemovedOnCompletion = false
        
        iconView.layer.add(anim, forKey: nil)
    }
    
    
    // MARK: - 私有控件
    // 懒加载属性只有调用 UIKit 控件的指定构造函数，其他都需要使用类型,建议都加上类型
    // 图像视图
    fileprivate lazy var iconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    // 遮罩图像
    fileprivate lazy var maskIconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    // 小房子
    fileprivate lazy var houseIconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    // 提示标签
    fileprivate lazy var tipLabel: UILabel = UILabel.cz_label(withText: "关注一些人，回这里看看有什么惊喜关注一些人，回这里看看有什么惊喜", fontSize: 14, color: UIColor.darkGray)
    
    
    
}


// MARK: - 设置界面
extension WBVisitorView {
    
    func setupUI() {
        
        backgroundColor = UIColor.cz_color(withHex: 0xededed)
        
        // 1.添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(houseIconView)
        addSubview(tipLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        tipLabel.textAlignment = .center
        
        // 2.取消 autoresizing
        
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        // 3.自动布局
        let margin: CGFloat = 20.0
        // 1> 图像视图
        addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.centerY, multiplier: 1.0, constant: -60))
        
        // 2> 小房子
        addConstraint(NSLayoutConstraint(item: houseIconView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: iconView, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: houseIconView, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: iconView, attribute: NSLayoutAttribute.centerY, multiplier: 1.0, constant: 0))
        
        // 3> 提示标签
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: iconView, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0))
         addConstraint(NSLayoutConstraint(item: tipLabel, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: iconView, attribute: NSLayoutAttribute.bottom, multiplier: 1.0, constant: margin))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 236))
        
        // 4> 注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .left, relatedBy: .equal, toItem: tipLabel, attribute: .left, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .top, relatedBy: .equal, toItem: tipLabel, attribute: .bottom, multiplier: 1.0, constant: margin))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 100))
        
        // 5> 登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .right, relatedBy: .equal, toItem: tipLabel, attribute: .right, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .top, relatedBy: .equal, toItem: tipLabel, attribute: .bottom, multiplier: 1.0, constant: margin))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .width, relatedBy: .equal, toItem: registerButton, attribute: .width, multiplier: 1.0, constant: 0))
        
        // 6> 遮罩图像
        // views: 定义 VFL 中的控件名称和实际名称映射关系
        // metrics: 定义 VFL 中 () 指定的常数映射关系
        let metrics = ["spacing": -35]
        let viewDict = ["maskIconView":maskIconView,"registerButton":registerButton] as [String : Any]
        addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|-0-[maskIconView]-0-|", options: [], metrics: nil, views: viewDict))
        addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-0-[maskIconView]-(spacing)-[registerButton]", options: [], metrics: metrics, views: viewDict))

    }

    
    
}
